Sen. Tim Sheehy (R-MT) turned on Rep. Max Miller (R-OH) Wednesday, calling him a "degenerate sociopath" who should step aside before his abuse scandal hands Democrats a House seat.
Miller, who faces domestic abuse allegations from two women, has refused to leave his reelection campaign in Ohio's 7th Congressional District.
Republicans have until Monday to replace him on the ballot — and Sheehy says time is running out. However, President Donald Trump has continued to stand behind his endorsement of Miller.
"What kind of person would treat their daughter this way?" Sheehy wrote on X, referring to an alleged incident where Miller held his daughter's favorite toy "hostage" for 48 hours. "This guy is clearly a degenerate sociopath."
"Staying in this race makes it far more likely we lose this seat and hand Democrats a majority to impeach President Trump," he added.
Ohio's 7th Congressional District was considered a safe Republican seat until polls began to shift when Miller's scandal caught fire.
Miller has held the northeast Ohio seat since 2023, and the district — which Trump carried by 13.5 points in 2024 — leans Republican. But The Hill reported that GOP strategists warn the allegations have made the seat nearly impossible to hold with Miller on the ballot, as the party clings to a four-seat House majority.
In interview after interview, the candidate has insisted that he will stay in the race.
"I'm not going anywhere," he told CNN Wednesday.
Sheehy is just the latest in a growing number of Senate Republicans who have joined him since Miller's former father-in-law, Sen. Bernie Moreno (R-OH), broke his silence Sunday and said Miller "should not serve in the House of Representatives."
"He should resign. He should quit," Sen. Roger Marshall (R-KS) told Politico.
Sen. Rick Scott (R-FL) said Miller "shouldn't be in office," Politico reported.
On Wednesday, Moreno revealed to CNN anchor Jake Tapper that Miller's ex-wife and daughter had fled the state due to safety concerns.
"I sent my daughter, granddaughter, and wife out of state to a secure place until such time as they feel safe," Moreno told CNN.
Days earlier, Moreno had described going to a police station to pick up his granddaughter, where he alleged Miller refused to hand the child her stuffed rabbit at the custody exchange.
"She has a little blue bunny that she sleeps with. Max would not hand over the little blue bunny. Literally held it hostage for 48 hours," Moreno said, according to the Washington Examiner.
"This is the level of total and complete depravity," Moreno added.
Miller denies all of the allegations against him and has asked the House Ethics Committee to investigate.